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From "Mariappan Asokan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-8347) Use base-64 encoding instead of custom encoding for serialized objects
Date Sat, 04 Oct 2014 00:37:35 GMT
Mariappan Asokan created HIVE-8347:
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             Summary: Use base-64 encoding instead of custom encoding for serialized objects
                 Key: HIVE-8347
                 URL: https://issues.apache.org/jira/browse/HIVE-8347
             Project: Hive
          Issue Type: Improvement
          Components: HCatalog
    Affects Versions: 0.13.1
            Reporter: Mariappan Asokan


Serialized objects that are shipped via Hadoop {{Configuration}} are encoded using custom
encoding (see {{HCatUtil.encodeBytes()}} and its complement {{HCatUtil.decodeBytes()}}) which
has 100% overhead.  In other words, each byte in the serialized object becomes 2 bytes after
encoding.  Perhaps, this might be one of the reasons for the problem reported in HIVE-453.
 The patch for HIVE-453 compressed serialized {{InputJobInfo}} objects to solve the problem.

By using Base64 encoding, the overhead will be reduced to about 33%.  This will alleviate
the problem for all serialized objects.



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